My sister was hurt in a serious car accident. What type of damages or compensation is available?

Damages or compensation for your sister's injuries depends on the harms she suffered.  Basically, she can be compensated for what she has lost - medical expenses caused by the negligent driver, lost income and time off of work, medical devices and medical durable goods (like a wheelchair) her injuries require.  She may also be compensated for the pain, distress, permanent injury and disfigurement the accident caused.

The amount of compensation or damages depends on the extent of the injuries.  Severe injuries often require extensive medical treatment and costs, future medical care and treatment and result in significant lost income.  If that is the case, the compensation required to make up for these harms, caused by the negligent driver, can be substantial.